Apparatus for welding ink and cellulose tissue



July 14, 1936. Q JALENS 2,047,372`

.APPARATUS FOR WELDING INK AND cELLULosE TISSUE original Fil'ed sept.15, 19:55

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Patented July 14, 1936 PATENT GFFICE APPARATUS FOR WELDING INK ANDCELLULOSE TISSUE George 'Jalens West New York, N. J.

Application september 15, 1933, serial No. 689,674 I'tenewed March 30,1936 1 Claim.

This invention relates to apparatus and processes for drying sheets offreshly printed fabrics, whereby oisetting and smutting is preventedwhen applying differently colored ink thereon in quick succession, andhas particular reference to sheets of non-absorbent material such, forinstance, as cellulose tissue, glassine etc.

In printing on ordinary paper, any excess moisture in the ink is quicklyabsorbed by the paper and its bibulous character is commonly enhanced bypassing the sheets through a heated zone, produced by electricity or agas flame, and eventually ydeposited in a container in such amanner'that a film of air intervenes the sucl5 cessive sheets. Inasmuchas only the printed surface of the paper is dry and `not the paperitself, sheetsof absorbent material must be inserted between printedsheets to prevent *blurring. i,

A thorough drying of print and web is particularly important Where acondition of complete dryness must exist, as in multi-colored printingbefore the sheets reach the next printing cylinder.

However, when printing on non-absorbent material other means must befound to dissipate the moisture in the ink, so that only the pigmentremains on the surface in a completely dry condition, and it is theprincipal object of this invention to accomplish that effect.

A further feature of this invention resides in the provision of meansfor imparting heat directly to the surface of a freshly printed webduring its travel by drawing the ink through the 35 fabric, and meanswhereby the solvents in the ink are withdrawn by suction pumps, thesuction heads of which are arranged directly opposite the heat producingrolls.

Another purpose of the invention is the provision of a drying apparatusconsisting of a stationary heating element in a rotatable housing ofheat conductive material and light weight. Another aim of the inventionis the provision of an apparatus of 'this character which can be used inconnection with ordinary printing presses of the cylinder or at bedtype.

Another feature of the invention is to provide means for printing onmoisture-proof cellulose tissue, where it is necessary for the ink topenetrate the wax coating of the paper, to form a firm weld between inkand paper.

A yet further aim is the provision of an apparatus of this characterconsisting of few and simpleparts', being simple and effective inoperation and highly durable.

These several lconsequential and characteristic features are achieved bythe novel and practical construction of parts hereinafter described fandshown in the accompanying drawing, constituting an essential part ofthis'dlsclosure, and 5 in which:

Figure 1 is a schematic view of an embodiment of the invention, certainparts being inside elevation and others in section.

Figure 2 is a longitudinal sectional view of the l10 heat engenderingroll.

Figure 3 is a transverse sectional view, taken on line 3--3 of Figure 2.l

Figure 4 is a fragmentary side elevational view of the heating roll andheat controlling element, l5 the housing being removed.

Figure 5 is an enlarged sectional view illustrating the relation ofparts when in operation.

Figure 6 is a diagrammatic view Iof the heat control element.

In Figure 1 of the drawing, two stands, respectively designated by thenumerals lil- II are shown, .these stands being secured in spacedrelation on a floor, to support freely rotatable rolls, on which aremounted a coiled web I2.

This web is the material on which the printing is to be received, and itis to be understood that one of the rolls, as that in. the stand Il, isprovided lwith a driving means (not shown) and the other is actuated bymovement of the 30 web as it is drawn from it.

Spaced intermediate the stands are ink contain- ,ers Ill-I5, havingmounted in them dispensing cylinders lG-l'l and thereabove, in verticalregistration with their axis are impression rolls 35 |8-l9, the webbeing between the rolls and the cylinders. one set of which supplies inkof one color and the other another color.

AThe web l2 is directed upwardly from the rolls I8-I9 to pass underguide rollers 2li-2| and over 40 similar rollers 22-23, whereby the webis subject to atmospheric drying. The guide rollers may be eliminatedhowever, as atmospheric drying becomes unnecessary since the heatingelement leaves the web in a thoroughly dry condi- 45 tion.

Rearwardly adjacent the ink containers I4-I5 are platforms 24--25 onwhich are xed motors 26--21 directly geared to suction pumps 28-29having expanded inlet heads 303I suited in 50 shape and disposed closelyadjacent the under surface of the web which is inclined upwardly afterleaving the printing cylinders |6-l1.

Pairs of support arms 32--33 are secured to the frame of the apparatus(not shown) and xed to 55 extend between each pair of arms is a tube 35provided at its extending ends with expanded caps 36 having removablecovers 3l. These caps also have lateral bosses 38 in which are set tubes39.

Fixed on the tube 35 adacently inward of the arms 32 are rigid washers40 of low heat conductivity to prevent the heat from penetrating thehousing of the roller laterally. Also fixed on tube 35 are the innerelements of annular ball bearings 4l their outer elements being set incollars 42 provided with caps 43.

The collars or heads 42 are clear of the tube 35 and are held fromlongitudinal movement by the washers against which they make contact attheir inner sides.

A tubular housing 45 is fixed in annular recesses at the inner ends ofthe collars d2 to extend therebetween, this tube being of light weight,heat conductive material and of very small diameter. Aluminum is one ofthe materials suitable for the housing. Due to its mounting the housingis readily rotatable by the web with which it makes frictional contacton the side opposite the freshly inked face of the web.

Mounted on the tube 35, intermediate the heads 42, and locked inposition by clamp nuts 46, are a series of dielectric discs lhsuch asmica, having between them spacers it of like material.

Set in one of the outer discs Ml' are a pair of binding posts 49-50 towhich are secured electric conductors 5I-52 passing out through the tubeand pipe 39 after being encased in the housing 3b.

In Figure 6 is illustrated a simple heat control means comprising aswitch 5@ to which are con nected the heating coils 5&1. It will beapparent that the pointer 5l on switch may he turned to oil, low, mediumor "high selectively, and that the temperature within the roller willvary accordingly.

In order to print upon waxed or moisture-proof fabric it is necessary tomelt the wax coating upon the cellulose tissue before printing is donethereon. If this is not done, the ink will not penetrate the waxedsurface, and the impression will not last. In order to obtain thedesired result, a heating element without'suction pump, is securedforwardly adjacent each printing cylinder. Thus the waxed cellulosetissue will be heated before ink is applied thereon.

While certain preferred embodiments of this device have been shown anddescribed, it will be understood that changes in form, arrangements,proportions, sizes and other details thereof may be made withoutdeparting from the scope of the invention as defined in the appendedclaim.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent, is:

An apparatus for drying moisture-proof cellulose tissue comprising apair of stands provided with means for supporting a web therebetween, n

means for making an ink impression on said web when moving from onestand to the other; two heated rollers of small diameter and lightweight in direct frictional contact with and actuated by said web, onearranged to heat the web before an ink impression is made thereon, andthe other to dry the web after the ink impression has been made, andmanually operable means for selectively controlling the degree of heatin said rollers.

GEURGE JALMS.

